Is FXAS21002C gyro precises?!

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ProninE
 
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Joined: Tue Nov 13, 2018 4:26 pm

Is FXAS21002C gyro precises?!

Post by ProninE »

Hello. I read the nice article https://learn.adafruit.com/comparing-gy ... s/overview
and became happy owner of Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 + FXAS21002
I test it to findout is it realy have only 0.39 degree per second zero-rate level?

So i want share the result of expirement.
1) I have Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 + FXAS21002
2) refrigerator able freez down to -38 celsias

Idea is keep the sensor still at the refrigerator. and record the average sensor output data.
Save the avararage result for each degree of temperature.

for measure temperature i use internal temp sensor inside FXAS21002
And don't forget switch FXAS21002 to the 250 degrees range mode. (at original adafruit code this switch is disabled - it always 2000 degree range)

So the result is at the picture.
blue is x axis - -28 it avarege - 3.2 dps, at 65 it near -0.5 dps
So don't forget to make your own temperature compensation!

it is just experiment, and it may be wrong.
If you play with your sensor, please share the result.
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gyro_drift.jpg
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